Microsoft Research’s TouchDevelop is a remarkable tool that lets you write software for Windows Phone right on the phone itself. The news today is that it is now possible to distribute software developed using TouchDevelop (again, this task is done right on the phone) through Microsoft’s own Windows Phone Marketplace.
turn TouchDevelop scripts into apps on the Windows Phone Marketplace
You can learn more about the preparation and submission process here.
You can listen to the podcast discussion I had with Nikolai Tillman (Principal Researcher Software Design Engineer of Microsoft Research) in June 2011 when the tool was named TouchStudio